1996 - 1998 EK Civic Conversion Harness Part # KTH-96-98

Applications: 1996 - 1998 EK Civic

Important NOTE: Please read all instructions very carefully as K-Tuned is not responsible for any damage to the ecu,

sensors or wiring. To start off, there are a few common wires that need to be wired up the same way on all K-swap

vehicles.

COMMON K-SWAP WIRING

Engine grounds - We recommend that a minimum of 2 engine grounds be used on a K-Series engine swap. Hook up one

from the timing chain case to the chassis, and a second ground from the transmission case to the chassis.

Fan switch - If you are using KPro, hooking up a fan switch is optional. The KPro software (Protection section) can be

set up to control the cooling fan through the oem ECT sensor already wired into the factory K-series engine harness.

NOTE: For installs without KPro the fan switch must be wired up to control the cooling fan. To do this, you will need to

reuse the fan switch from your B/D series engine or purchase a new one from K-Tuned or your local Honda dealer. You

will also need to cut off the 2 pin connector plug from your old B/D series harness. There are 2 wires on the plug for this

sensor, signal (solid green) and ground (black).

To wire up the fan, connect the signal (green) wire from the fan switch plug to the solid green wire found on the green

EK plug of the K-Tuned harness. To complete the circuit run a new ground (black) wire to somewhere to the chassis. For

a clean look you may want to route this into the cabin and ground to the chassis there.

Coolant Temp sensor for the gauge cluster - You need to reuse the sensor and plug from your B/D series engine or

purchase a new one from K-Tuned or your local Honda dealer. This is a yellow/green wire needs to be run into the bay

and hooked up to the coolant temp sensor so the gauge on the cluster will operate. This is a simple single wire connection

yellow/green on the plug to yellow/green on the K-Tuned harness. We recommend that this sensor be placed in the upper

coolant housing for an accurate reading. We sell an adapter that makes this install very easy.

Charging Light – To operate the charging light, the white/blue wire on the K-Tuned conversion harness needs to be

tapped into position B10 on your K-series engine harness. Do not cut the wire simply tap into it. The wire on the K-series

engine harness will also be white/blue.

CAR SPECIFIC CONNECTIONS

There are no specific wiring connections for this vehicle.

STEP BY STEP (EK is shown, EG is similar)

1) Locate the plug found at the driver side shock tower. This is where the conversion harness will plug in.

2) Push the shock tower plug back through the firewall. Use zipties to hold the conversion harness below the dash making

sure to keep it away from the pedals.

3) When the harness is secure, connect the original shock tower plug to your K-Tuned conversion harness.

4) Here is the K-series RSX-S engine harness passed through the AC grommet into the passenger side cabin. Right beside

the harness, we are using a Hondata KPro ecu.

5) A and B plugs can now be plugged into the ecu.

6) The remainder of K-Tuned conversion harness is now located on the passenger side cabin. The large grey connector

can be plugged in.

7) Remove the ecu B plug and locate pin B10. This is a white/blue wire.

8) Now simply tap the white/blue wire on the K-T harness into the white/blue wire on B10. Do not cut this wire just tap

into it.

9) Here we connect the green plug found only on EK’s. Skip this step for EG/DC2 installs

10) Now find a suitable grommet to pass the O2 sensor wiring through. The AC grommet or the smaller one below it

should work fine. If you are running both O2’s you can pass them both through the same hole

11) Next, the primary O2 is passed up above the subframe and plugged in.

12) Here is the B/D coolant temp sensor installed on the engine. We have used our K-Tuned temp sensor adapter.

13) Now the yellow/green wire from the driver side of the K-Tuned harness can be connected to the temp sensor.

14) When all the car specific connections have been made and everything is working properly, the K-Tuned harness and

ecu can be tucked behind the dash or carpeting out of view.